design of an acl tear repression, reconstruction, and rehabilitation system PDF
Preview design of an acl tear repression, reconstruction, and rehabilitation system
DESIGN OF AN ACL TEAR REPRESSION, RECONSTRUCTION, AND REHABILITATION SYSTEM AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW SENIOR DESIGN SYST 490 - 001 AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 1 SENIOR DESIGN SYST 490 - 001 CONTEXT ANALYSIS AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 2 SENIOR DESIGN SYST 490 - 001 OVERALL PARTICIPATION IN NCAA SPORTS • Title IX of the Education Amendments of 1972 Participation in NCAA Sports Division I, II, and III • 29,977 in 1972 500,000 • 191,131 in 2011 450,000 • 638% increase 400,000 350,000 • Females are 2-8 times more likely to tear their ACL 300,000 than Males 250,000 200,000 150,000 100,000 50,000 0 Men Women Combined NCAA <2011> AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 3 SENIOR DESIGN SYST 490 - 001 DEFINITIONS • ACL – Anterior Cruciate Ligament • ACLI – Anterior Cruciate Ligament Injury • Repression – the attempted prevention of an ACLI • Reconstruction – the surgical process to repair an ACLI • Rehabilitation – the process of returning to previous level of athletic effort • BTB – Bone tendon bone • BTL - Bone tendon ligament • Valgus –knees coming together during athletic movement • Quad Dominance – using quadriceps to absorb all the shock • Q- angle – the angle between hip and the knee AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 4 SENIOR DESIGN SYST 490 - 001 THE “KNEE SYSTEM” Wikipedia <2015> OhioDance <2012> Back View of the Knee AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 5 SENIOR DESIGN SYST 490 - 001 ACL TEAR Dr. Samual D. Carter <2013> Dr. David Geier <2014> AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 6 SENIOR DESIGN SYST 490 - 001 WHAT MAKES AN ACLI DIFFERENT FROM OTHER LIGAMENT INJURIES? • The Synovial Fluid • Non-Newtonian Fluid • Reduces friction between the cartilage • Prevents blood from clotting on the torn ACL • Blood clotting acts like a reconstructive scaffold that facilitates scar tissue creation and healing. HydraRub <2006> AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 7 SENIOR DESIGN SYST 490 - 001 WAYS TO TEAR ACL • Internal/external - 24% 80% Non • Adduction/abduction - 56% Contact • Flexion/extension - 2% • Adduction/abduction - 13% • Flexion/extension - 5% • Yohei Shimokochi <2008> 20% Contact Carmen E. Quatman <2010> AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 8 SENIOR DESIGN SYST 490 - 001 FORCES ON THE KNEE r= radius beta = atan2(r32, (r12^2 + r22^2)^(½) alpha = atan2(-r12/cosbeta, r22/cosbeta) gamma = atan2(-r31/cosbeta, r33/cosbeta) AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 9 SENIOR DESIGN SYST 490 - 001 CURRENT METHODS OF HANDLING ACLS AMR ATTYAH, MARIBETH BURNS, SAM MILLER, ANDREW TESNOW 10 SENIOR DESIGN SYST 490 - 001
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